Quick guide
- Pick a mode — screen with camera, screen only, or camera only.
- Choose sources — the browser asks for screen, camera and microphone.
- Place the camera — drag it in the preview; it snaps to edges and centre. Resize with the handle, the scroll wheel or the slider.
- Record — start, pause, stop. On Chrome and Edge the file is written straight to your disk while you record, so length is limited by disk space, not memory.
- Floating window — puts your camera and the controls into a window that stays on top of every other program.
- Share — download and send the file, use the system share sheet, or (on a paid plan) copy a link that uploaded while you were still talking.
What happens to my data?
On the free plan nothing leaves this computer. The recording is written directly into the
file you picked; it never passes through a server. There is no cookie and no banner on this
page. The only requests this page is allowed to make at all are listed in its
Content-Security-Policy — open DevTools and check.
Two exceptions, both visible there: anonymous, cookie-free usage counters
(how many recordings start, how many finish — never any content) go to our EU measurement
endpoint, and on a paid plan your video is uploaded to our storage while you record,
because that is the thing you are paying for.
Recording conversations
In Germany and many other countries you may only record spoken conversations with the
consent of everyone involved (§ 201 StGB — up to three years' imprisonment). BlocRec always
shows a recording indicator and will never offer a hidden mode. You are responsible for the
recordings you make.
No picture, no sound?
- macOS: System Settings → Privacy & Security → Screen Recording → enable your browser, then restart it.
- Permission denied: click the lock icon in the address bar → set camera/microphone to “Allow”.
- System audio: Chrome and Edge capture it when you share a tab or a screen and tick “Share audio”. Safari and Firefox do not.
Does it stutter when I switch windows?
It must not. Browsers throttle hidden tabs — then only a few frames per second would reach
the video. That is why the timing here comes from the camera and the screen share itself,
not from the window. Chrome and Edge use Insertable Streams for this; Firefox and Safari get
a fallback driven by a worker timer. If it still stutters, use a lower resolution or 30
instead of 60 frames.